Addition: Level 1 - uses the digits from 10 to 9
AAA Math: Grade 1
Addition Surprise
A+ Math - flash cards and more
Basic Math - Finish the Number Sentences
Brain Teasers - from Houghton Mifflin
Buzzing with Shapes - almost like tic-tac-toe
Clockwise - Choose your level to see how much you know.
Cuisenaire Rods Math Activities
Flash Cards for Kids - good practice
Funbrain: Numbers and Letters
Guess the Number  many levels of difficulty
Graphing Made Easy : Make your own graphs
Hi Rise Math - play this the first time with an adult
How Many? - Count the pictures.
Interactive Mathematics - An adult needs to go through and pick out those activities that are best.
Hidden Picture - addition - check your addition facts
Hidden Picture - Subtraction - check your skill
Line Jumper - do math on a number line
Joe the Dragon: Math and More
K-2 Math - Choose from many activities.
Math Advantage - match different ways to tell the same time
Math Baseball - choose your level and score
Math Brain: Leveled Fun
Math Grade 1: Many Activities from MacMillian/ Mc Graw Hill
Memory Game - match basic addition facts to discover the picture
Measure It  Choose the easy ones first.
Mend the Number Square: place the missing numbers in the numbered box
Money 
Musical Memory Turtle
National Library of Virtual Manipulatives - many excellent choices
One False Move  Practice ordering numbers
Park the Pods  Number line placement
Pattern Blocks
Pattern Games - three choice levels
Rainforest Math
Robot Calculator
Saxon Publishers Activities- patterns, multiples, sorting and graphing.
Snakes and Ladders Try it with a Partner
Soccer Shootout - choose the correct level and practice your facts
Subtraction Mystery Picture - concentration game with basic facts
Test the Toad  Addition and Subtraction Problems
Telling Time 
Two Player Math Game - Who will win?
Twin Pics - find what is different.
Willy the Watchdog - You can tell time here.

www.bookpals.net/storyline/

www.harcourtschool.com/menus/harcourt_brace_spelling.html

Science Clips - Light and Shadows
Ranger Rick's Go Wild Games
Snowflakes

Unit: Dinosaurs

Albertosaurus
Allosaurus
Ankylosaurus
Apatosaurus
Archaeopteryx
Brachiosaurus
Ceratosaurus
Coelephysis
Deinonychus
Dimetrodon
Diplodocus
Iguanodon
Ichthyosaurus

Maisaura
Plateosaurus
Protoceratops
Pteranodon
Stegosaurus
Triceratops
Tyrannosaurus
Velociraptor
Dinos Rock Story 
Dinosaur ABC's
Build-A-Saurus- Harcourt

Unit: Plants

4-H Garden- Click Kids
Teacher Talk:  Garden Grants
Teacher Talk: Field Study
Dandelions & Parachutes Teacher Talk: Teacher Net Lesson
Teacher Talk: Smithsonian:  Garden
Teacher Talk: Corn Seed Activities

Activities

Activities
Alphabet Games
BBC History Games
BBC Science Lab
BBC Dynamo's Den
Jigsaw Puzzle Paradise Teacher / K-8
Map Puzzles K-6
Monamophosis
Puzzles
Ludovic the Bear
Voyage of the Mayflower
The First Thanksgiving
North Pole and World Christmases
Teacher Talk: Dolch Sight Words
PBS:  Dragontales Activities
PBS: Arthurs' Activities